World Bird List

Species factsheet
Great Slaty Woodpecker (Mulleripicus pulverulentus)

Order: Mulleripicus pulverulentus
Family: Woodpeckers (Picidae)

Voices can be found here (external link)
Subspecies and Distribution
Subspecie Distribution
mohun n India, Nepal and ne India
harterti ne India to sw China, Indochina and n Malay Pen.
pulverulentus s Malay Pen., Borneo, Sumatra, Java, Balabac and Palawan Is.